ENGDOCS-2266 (#21215)

<!--Delete sections as needed -->

## Description

When looking for DD release notes, search pulls in v. old release notes
that are no longer needed. Instead of deleting these pages completely,
this PR removes them from the sitemap and TOC but still provides a link
to them on the main release notes page

## Related issues or tickets

<!-- Related issues, pull requests, or Jira tickets -->

## Reviews

<!-- Notes for reviewers here -->
<!-- List applicable reviews (optionally @tag reviewers) -->

- [ ] Technical review
- [ ] Editorial review
- [ ] Product review

content/manuals/desktop/previous-versions/2.x-mac.md

@@ -5,6 +5,7 @@ title: Docker Desktop for Mac 2.x release notes
 toc_min: 1
 toc_max: 2
 aliases: /desktop/mac/release-notes/2.x/
+sitemap: false
 ---
 
 This page contains release notes for Docker Desktop for Mac 2.x.

content/manuals/desktop/previous-versions/2.x-windows.md

@@ -5,6 +5,7 @@ title: Docker for Windows 2.x release notes
 toc_min: 1
 toc_max: 2
 aliases: /desktop/windows/release-notes/2.x/
+sitemap: false
 ---
 
 This page contains release notes for Docker Desktop for Windows 2.x. 

content/manuals/desktop/previous-versions/3.x-mac.md

@@ -8,6 +8,7 @@ aliases:
 - /desktop/mac/previous-versions/
 - /docker-for-mac/previous-versions/
 - /desktop/mac/release-notes/3.x/
+sitemap: false
 ---
 
 This page contains release notes for Docker Desktop for Mac 3.x. 

content/manuals/desktop/previous-versions/3.x-windows.md

@@ -8,6 +8,7 @@ aliases:
 - /desktop/windows/previous-versions/
 - /docker-for-windows/previous-versions/
 - /desktop/windows/release-notes/3.x/
+sitemap: false
 ---
 
 This page contains release notes for Docker Desktop for Windows 3.x. 

content/manuals/desktop/previous-versions/_index.md

@@ -3,4 +3,5 @@ build:
   render: never
 title: Previous releases
 weight: 200
+sitemap: false
 ---

content/manuals/desktop/previous-versions/archive-mac.md

@@ -6,6 +6,7 @@ toc_min: 1
 toc_max: 2
 aliases:
 - /desktop/mac/release-notes/archive/
+sitemap: false
 ---
 
 This page contains release notes for older versions of Docker Desktop for Mac.

content/manuals/desktop/previous-versions/archive-windows.md

@@ -6,6 +6,7 @@ toc_min: 1
 toc_max: 2
 aliases:
 - /desktop/windows/release-notes/archive/
+sitemap: false
 ---
 
 This page contains release notes for older versions of Docker Desktop for Windows. 

content/manuals/desktop/previous-versions/edge-releases-mac.md

@@ -6,6 +6,7 @@ toc_min: 1
 toc_max: 2
 aliases:
 - /desktop/mac/release-notes/edge-releases/
+sitemap: false
 ---
 
 This page contains information about Docker Desktop Edge releases. Edge releases give you early access to our newest features. Note that some of the features may be experimental, and some of them may not ever reach the Stable release. 

content/manuals/desktop/previous-versions/edge-releases-windows.md

@@ -6,6 +6,7 @@ toc_min: 1
 toc_max: 2
 aliases:
 - /desktop/windows/release-notes/edge-releases/
+sitemap: false
 ---
 
 This page contains information about Docker Desktop Edge releases. Edge releases give you early access to our newest features. Note that some of the features may be experimental, and some of them may not ever reach the Stable release.

content/manuals/desktop/release-notes.md

@@ -19,7 +19,7 @@ weight: 220
 
 This page contains information about the new features, improvements, known issues, and bug fixes in Docker Desktop releases. For frequently asked questions about Docker Desktop releases, see [FAQs](faqs/releases.md).
 
-Docker Desktop versions older than 6 months from the latest release are not available for download.
+Docker Desktop versions older than 6 months from the latest release are not available for download. Previous release notes are available in our [documentation repository](https://github.com/docker/docs/tree/main/content/manuals/desktop/previous-versions).
 
 Take a look at the [Docker Public Roadmap](https://github.com/orgs/docker/projects/51/views/1?filterQuery=) to see what's coming next.